1.The best way to describe when someone's neck has all but disappeared beneath a layer of fat, giving the impression that the person is sporting some kind of fleshy scarf-like garment.
2.Has also been adopted as a term for weed in situations when discretion is required.

1.
me- "Mate...george lucas has some serious meatscarf going on there. I bet he inflates it to attract a mate...."
my pal- "heh, yeah..."
2.
me-"mate, We need to get us some meatscarf before this evening is through...."